Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

A RANGE OF TRANSMITTER IS (0-400)B mm abs what is "B"?

HCL,

1 5612

What is the difference between a Extension cable and a copnesating cable.Where can we use compensating cable. Is anywhere compensating cable are used for mv transmission to the indicator.

1 4666

You are looking at the RS-485-side of an RS-232/RS-485 converter and the power supply voltage for the converter is +5V. Under idle conditions (no transmission), and assuming you have enabled the RS-485 output: what would you expect at: (a) Output A measured against output B (b) Output A measured against ground (c) Output B measured against ground

EIT,

1 7325

Profibus DP is a multi-master system. Would it work on RS-485 4W or not, and justify your answer

EIT,

1 10090

What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus

EIT,

5918

Is there’s power on the bus (if so, state whether on the signal bus, or on a separate in the following: a) HART b) Profibus DP c) Profibus PA d) DeviceNet e) Foundation Fieldbus

EIT,

1 4671

what is pyrometer? which purpose it has to be used?

2 6650

How find CGPA? when marks are 515/850 & 2559/3350. Plz any one tell me.

1 2837

what is basic difference between motion balance and force balance in pneumatic instrument?

Sterlite, TCL,

9758

what is the procedure of O2 sensor(ABB) calibration?

Aramco, Samsung,

2242

what is the procedure of belt scale calibration?

2487

what is the procedure of O2 analyser calibration?

Thermax,

3 18041

how to calibrate load cell

Siemens,

2891

how to calibrate differential pressure switch

2 15104

Control valve question what is the meaning of cauge.?what is the use of cauge?

1 5486

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Un-Answered Questions { Instrumentation }

i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure

1966

defination of radial vibration?

2346

Explain bernoulli’s theorem.

1115

Why rdt and thermocouple both give different output .and one things more, how to generate ohm or mili volt plz mail me merajalam143545@yahoo.com

2855

What is frequency factor in massflow meter? When using frequency output?

1920

WHAT ARE THE INSTRUMENTAL DIAGRAMSOF VALVES?

2190

I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??

1456

In my company plc based winders are operated. one day there was a data transmission failure alarm shown on pc. as per sir instruction we have reset master plc but winders were not triped and alarm gone. so what master plc do?

1930

Explain the working of an enraf level gauge.

1147

what is metal of piston ring

1976

Give 2 application of quartz crystal used for process parameter measurement.

2058

please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

2324

What is the GK Value in Flowmeter?

3770

TECHNICAL/ARTITUDE

2304

Which is your favourite subject & explain any one topic of it.

9674

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